Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
000030goodexcellent41excellent
230025goodexcellent31excellent
220021goodexcellent31excellent
210012excellentexcellent11excellent
200011excellentexcellent11excellent
19007excellentexcellent11excellent
180031goodexcellent21excellent
17007excellentexcellent11excellent
160011excellentexcellent21excellent
150015excellentexcellent31excellent
140034goodexcellent21excellent
130013excellentexcellent21excellent
120028goodexcellent31excellent
110057goodexcellent21excellent
100022goodexcellent11excellent
090012excellentexcellent21excellent
080010excellentexcellent21excellent
070013excellentexcellent21excellent
060013excellentexcellent31excellent
050012excellentexcellent21excellent
040012excellentexcellent21excellent
030012excellentexcellent21excellent
020015excellentexcellent31excellent
010016excellentexcellent21excellent